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1978 Map of Bouldin Island

Name: 1978 Topographic Map of Bouldin Island
Creator: U.S. Geological Survey
Published: 1978
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1978

About this map

The California Delta's intricate network of levees, islands, and tracts is meticulously documented in this 1970s survey. The landscape is defined by human engineering, featuring the vast Franks Tract (State Recreation Area) and the managed waterways of the Deep Water Channel and Mokelumne River. Dozens of pumping stations and lights facilitate both agriculture and navigation through the winding reaches of the San Joaquin River and Old River.

Recreational and transit nodes like Mandeville Tip County Park and the Venice Ferry contrast with the productive agriculture of Bouldin Island and Webb Tract. The presence of numerous tide gages and siphons underscores the complex hydrological management required for these low-lying lands. Small enclaves like the Trailer Park near the river bends show the local settlement patterns among the large-scale island tracts.